Adjust the GHA workflow per yamllint rules

.github/workflows/test-upload.yml

@@ -1,12 +1,15 @@
+---
+
 name: Test Upload
 
-on:
-  pull_request:
+on:   # yamllint disable-line rule:truthy
   push:
+  pull_request:
 
 jobs:
   test:
     runs-on: ubuntu-latest
+
     services:
       devpi:
         image: muccg/devpi
@@ -14,6 +17,7 @@ jobs:
           DEVPI_PASSWORD: abcd1234
         ports:
         - 3141
+
     steps:
     - run: python3 -m pip install --upgrade pip build twine
     - run: mkdir -p src/test_package
@@ -34,7 +38,8 @@ jobs:
       env:
         TWINE_USERNAME: root
         TWINE_PASSWORD: abcd1234
-          TWINE_REPOSITORY_URL: http://localhost:${{ job.services.devpi.ports['3141'] }}/root/public/
+        TWINE_REPOSITORY_URL: >-
+          http://localhost:${{ job.services.devpi.ports['3141'] }}/root/public/
     - uses: actions/checkout@v3
       with:
         path: test
@@ -43,3 +48,5 @@ jobs:
         user: root
         password: abcd1234
         repository_url: http://devpi:3141/root/public/
+
+...